Air Quality in Great Falls, United States

Drizzle
25.9°C · 54.3% humidity
25.9°
Feels 25.9°
37
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
25 6pm
25
27
37 9pm
34
32
29 12am
28
27
26 3am
26
26
25 6am
27
27
27 9am
27
27
25 12pm
25
25
25 3pm
25
25
AD 728×90

Air Quality Index Trend

45h · 28 stn

Great Falls's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

54.3%
Humidity
5.6 km/h
Wind NW
1012.2 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
37
8.9 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Great Falls?

Temperature & Precipitation

PM2.5 Trend

45h · 28 stations
PM2.58.9 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (1 station within 25 km)
8.9
Median
8.9
Average
8.9
Low
8.9
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -2.7

What is the 7-day forecast for Great Falls?

08-03
25.9° 19.9°
5.0 mm
08-04
37.7° 22.6°
08-05
34.6° 19.7°
0.69 mm
08-06
31.1° 22.4°
08-07
34.2° 21.1°
2.19 mm
08-08
37.3° 21.9°
0.69 mm
08-09
35.9° 23.2°
0.56 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Great Falls?

16
Ashburn - Broad Run High School, Northern Virginia, USA
17.6 km PM2.5: 3.8 µg/m³
38
Ashburn - Broad Run High School, Northern Virginia, USA
17.6 km PM2.5: 9.1 µg/m³
31
Ashburn - Broad Run High School, Northern Virginia, USA
17.6 km PM2.5: 7.4 µg/m³
31
3414 Nebraska Ave NW
19.0 km PM2.5: 7.4 µg/m³
27
Rockville, Maryland, USA
20.3 km PM2.5: 6.5 µg/m³
30
LAMB
22.6 km PM2.5: 7.2 µg/m³
33
Center City Brightwood Campus
22.8 km PM2.5: 8.0 µg/m³
38
GW Milken Institute School of Public Health
23.1 km PM2.5: 9.1 µg/m³
38
Aslin
24.0 km PM2.5: 9.0 µg/m³
36
Friendship Ideal
24.4 km PM2.5: 8.7 µg/m³

What cities are near Great Falls?

25 Reston 37 Wolf Trap 37 Potomac 29 Herndon 37 North Potomac 37 Tysons 26 Vienna 37 McLean 25 Sterling 25 Oak Hill
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T01:01 UTC.